- Sun Oct 27, 2013 3:57 pm
- Forum: Advanced Algebra ("pre-calculus")
- Topic: numerical applications
- Replies:
**3** - Views:
**1643**

thus the exact formular now the problem ask to find a %change in the period T given the %change in L length to be 2%.Help me solve the problem.

- Sun Oct 27, 2013 8:20 am
- Forum: Intermediate Algebra
- Topic: Find the slope of each line
- Replies:
**2** - Views:
**1079**

x=12

dx/dy=o

is a line parallel to the y axis. Note that for all line parallel to the x and y axis their gradients are zero.If given y=8

dy/dx=o

dx/dy=o

is a line parallel to the y axis. Note that for all line parallel to the x and y axis their gradients are zero.If given y=8

dy/dx=o

- Thu Oct 24, 2013 9:30 pm
- Forum: Calculus
- Topic: [SPLIT, MOVED] A colony of ants brings food to its hive at....
- Replies:
**3** - Views:
**1479**

please help me how to come out with the solution for the diffrential i'm failing to come up with the solution i tried it so many times but yeah! it made me puff.I don't have anybody to ask i'm doing A-level maths withot the aid of a teacher.

- Thu Oct 24, 2013 9:19 pm
- Forum: Intermediate Algebra
- Topic: Find the x- and y-intercepts of the graph
- Replies:
**2** - Views:
**908**

note the function is a straight line hence for all functions the x intercept is found when y is 0 so setting (x-3)/5 =0 will give x=3 and the y intercept will be found when x=0 thus y=(0-3)/5 .Gives y=-3/5.

- Sat Oct 19, 2013 5:20 am
- Forum: Calculus
- Topic: rate of change of volume if r increases at 2cm/m
- Replies:
**1** - Views:
**1214**

A solid consist of a hemisphere of radius r joined joined to a cone of constant height 60cm.The base of the cone is a plane face of a hemisphere.If r increases at a rate of 2cm/m.Calculate the rate of increase of the volume of the solid if r=60.leave answer in terms of pi. [volume of sphere=(4pir^3/...

- Thu Oct 17, 2013 10:17 pm
- Forum: Advanced Algebra ("pre-calculus")
- Topic: numerical applications
- Replies:
**3** - Views:
**1643**

The period T, of a simple pendulum is dwefined by the function T=4pi rut(l/g) where g is the constant gravitational acceleration and l the length of the pendulum.find the %change in the period caused by lengthening the pendulum by 2%.please help i diffrentiated to get dt/dl=pi/rut lg .I'm stuck there.

- Thu Oct 17, 2013 9:16 pm
- Forum: Beginning Algebra
- Topic: Help with rearranging formula x(squared) - y + 2ab = 4 for y
- Replies:
**2** - Views:
**1697**

-y=-x^2-2ab+4 then multiply or divide by -1 to get y=x^2+2ab-4

- Sun Oct 13, 2013 8:13 pm
- Forum: Calculus
- Topic: Find an equation of a Tangent Line of sin^2(x)?
- Replies:
**2** - Views:
**1652**

impute (1/2) for x in f'(x) to obtain the grad of the line .then again for x in y=f(x) to obtain the y value thus the point becomes p(1/2;sin^2 1/2)......and grad 2sin(1/2)cos(1/2)........!

- Thu Oct 10, 2013 8:57 pm
- Forum: Calculus
- Topic: [SPLIT, MOVED] A colony of ants brings food to its hive at....
- Replies:
**3** - Views:
**1479**

A colony of ants brings food to its hive at a constant rate of 500grammes per day.It consumes food at a rate of (x/2)grammes per day,where x is the amount of food present at time t days.taking x and t to be continuos variables write down a diffrential equition Ssatisfied by x andt to show the rate a...